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Old 10-04-2012, 01:47 AM   #1
matc
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Aug 2006
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I have an old bottle of star san, about 6 years old. Do you know if it is still ok to use ? I know you have to check the ph to make sure the product is still working but I can't find any ph paper strips that go below 6 ! Besides ordering online, where can I find a ph kit that goes well below 6 ?



 
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Old 10-04-2012, 12:29 PM   #3
Brewskii
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May 2011
Williamsburg, Va
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Try this... It's surly not exact but it's a ghetto way to get an idea.

http://www.sciencebuddies.org/scienc...html#procedure

 
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Old 10-04-2012, 04:11 PM   #4
tally350z
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Maybe go down to a pool place and get some standard ph strips that go below 6? just quick and easy. Or not risk it and buy a new bottle of starsan.
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Old 10-05-2012, 05:00 PM   #5
audger
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Apr 2011
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it should be fine, but i would get some pH strips that go down to <2, make a batch at the right concentration, and make sure that the pH is at or below ~2.5



 
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